TY - JOUR
T1 - A change of the superstructure and an associated rise of the superconducting critical temperature in the organic superconductor β-(BEDT-FFT)2I3
AU - Kagoshima, S.
AU - Nogami, Y.
AU - Hasumi, M.
AU - Anzai, H.
AU - Tokumoto, M.
AU - Saito, G.
AU - Mori, N.
PY - 1989/3
Y1 - 1989/3
N2 - X-ray diffraction measurement of the superstructure were made under pressure in the title compound. The wave vector of the superstructure was found to become short below about 100 K. This change occurs even at ambient pressure when the sample is kept in the range 100-120 K for a long time, say, 24 h. The sample annealed for 65 h at ambient pressure undergoes a superconducting transition at about 7 K, which is much higher than that observed in samples cooled with a conventional speed. These results are discussed in relation to the so-called "low-Tc" and "high-Tc" states of this compound.
AB - X-ray diffraction measurement of the superstructure were made under pressure in the title compound. The wave vector of the superstructure was found to become short below about 100 K. This change occurs even at ambient pressure when the sample is kept in the range 100-120 K for a long time, say, 24 h. The sample annealed for 65 h at ambient pressure undergoes a superconducting transition at about 7 K, which is much higher than that observed in samples cooled with a conventional speed. These results are discussed in relation to the so-called "low-Tc" and "high-Tc" states of this compound.
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U2 - 10.1016/0038-1098(89)91059-4
DO - 10.1016/0038-1098(89)91059-4
M3 - Article
AN - SCOPUS:0024631243
SN - 0038-1098
VL - 69
SP - 1177
EP - 1180
JO - Solid State Communications
JF - Solid State Communications
IS - 12
ER -